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* UIDoughnutChart: 修复数据全为0时报错

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Sunny 2024-05-07 14:16:55 +08:00
parent 06309a546f
commit 1277bad3f5
1 changed files with 34 additions and 18 deletions
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52
SunnyUI/Charts/UIDoughnutChart.cs
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@ -20,6 +20,7 @@
* 2021-07-22: V3.0.5 增加更新数据的方法 * 2021-07-22: V3.0.5 增加更新数据的方法
* 2022-07-29: V3.2.2 数据显示的小数位数重构调整至Option.DecimalPlaces * 2022-07-29: V3.2.2 数据显示的小数位数重构调整至Option.DecimalPlaces
* 2023-05-14: V3.3.6 重构DrawString函数 * 2023-05-14: V3.3.6 重构DrawString函数
* 2024-05-07: V3.6.6 修复数据全为0时报错
******************************************************************************/ ******************************************************************************/
using System; using System;
@ -126,12 +127,11 @@ namespace Sunny.UI
all += data.Value; all += data.Value;
} }
if (all.IsZero()) return;
float start = 0; float start = 0;
for (int i = 0; i < pie.Data.Count; i++) for (int i = 0; i < pie.Data.Count; i++)
{ {
float angle = (float)(pie.Data[i].Value * 360.0f / all); float angle = all.IsZero() ? 0 : (float)(pie.Data[i].Value * 360.0f / all);
float percent = (float)(pie.Data[i].Value * 100.0f / all); float percent = all.IsZero() ? 0 : (float)(pie.Data[i].Value * 100.0f / all);
string text = ""; string text = "";
if (Option.ToolTip != null) if (Option.ToolTip != null)
{ {
@ -166,26 +166,42 @@ namespace Sunny.UI
for (int pieIndex = 0; pieIndex < series.Count; pieIndex++) for (int pieIndex = 0; pieIndex < series.Count; pieIndex++)
{ {
var pie = series[pieIndex]; var pie = series[pieIndex];
if (pie.Data.Count == 0) continue;
for (int azIndex = 0; azIndex < pie.Data.Count; azIndex++) double all = 0;
foreach (var data in pie.Data)
{ {
Angle angle = Angles[pieIndex][azIndex]; all += data.Value;
Color color = ChartStyle.GetColor(azIndex); }
UIPieSeriesData data = pie.Data[azIndex];
if (data.StyleCustomMode) color = data.Color;
if (ActiveAzIndex == azIndex) if (all.IsZero())
g.FillFan(color, angle.Center, angle.Inner, angle.Outer + 5, angle.Start - 90, angle.Sweep); {
else Angle angle = Angles[pieIndex][0];
g.FillFan(color, angle.Center, angle.Inner, angle.Outer, angle.Start - 90, angle.Sweep); g.DrawEllipse(rectColor, new RectangleF(angle.Center.X - angle.Inner, angle.Center.Y - angle.Inner, angle.Inner * 2, angle.Inner * 2));
g.DrawEllipse(rectColor, new RectangleF(angle.Center.X - angle.Outer, angle.Center.Y - angle.Outer, angle.Outer * 2, angle.Outer * 2));
Angles[pieIndex][azIndex].TextSize = TextRenderer.MeasureText(Angles[pieIndex][azIndex].Text, TempFont); }
else
if (pie.Label.Show && ActiveAzIndex == azIndex) {
for (int azIndex = 0; azIndex < pie.Data.Count; azIndex++)
{ {
if (pie.Label.Position == UIPieSeriesLabelPosition.Center) Angle angle = Angles[pieIndex][azIndex];
Color color = ChartStyle.GetColor(azIndex);
UIPieSeriesData data = pie.Data[azIndex];
if (data.StyleCustomMode) color = data.Color;
if (ActiveAzIndex == azIndex)
g.FillFan(color, angle.Center, angle.Inner, angle.Outer + 5, angle.Start - 90, angle.Sweep);
else
g.FillFan(color, angle.Center, angle.Inner, angle.Outer, angle.Start - 90, angle.Sweep);
Angles[pieIndex][azIndex].TextSize = TextRenderer.MeasureText(Angles[pieIndex][azIndex].Text, TempFont);
if (pie.Label.Show && ActiveAzIndex == azIndex)
{ {
g.DrawString(pie.Data[azIndex].Name, Font, color, new Rectangle((int)angle.Center.X - Width, (int)angle.Center.Y - Height, Width * 2, Height * 2), ContentAlignment.MiddleCenter); if (pie.Label.Position == UIPieSeriesLabelPosition.Center)
{
g.DrawString(pie.Data[azIndex].Name, Font, color, new Rectangle((int)angle.Center.X - Width, (int)angle.Center.Y - Height, Width * 2, Height * 2), ContentAlignment.MiddleCenter);
}
} }
} }
} }